| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] known for [adj] years | 16 |
|
| 2 | have been know for [adj] years | 16 |
|
| 3 | have [been] know for [det] years | 15 |
|
| 4 | have [been] know for many years | 10 |
|
| 5 | have [been] know for many years | 10 |
|
| 6 | have [been] know for [adj] years | 7 |
|
| 7 | has [been] know for [adj] years | 6 |
|
